Switch to ESM and Baseline2024 (#311)

* Drop custom upload progress events
* Update browser support to Baseline 2024
* Update Django version support
* Update Python version support
* Fix #310 -- Add `formaction` support on submit buttons

Fix Django version classifier (#289)

Fix #286 -- Narrow CSS selector to avoid mismatches

See also: https://code.djangoproject.com/ticket/35273

Bump actions/setup-python from 4 to 5

Bumps [actions/setup-python](https://github.com/actions/setup-python) from 4 to 5.
- [Release notes](https://github.com/actions/setup-python/releases)
- [Commits](actions/setup-python@v4...v5)

---
updated-dependencies:
- dependency-name: actions/setup-python
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Split selenium tests into separate CI job

Replace call to self._clean_name with clean_name (#252)

* Replace call to self._clean_name with clean_name
* Require django-storages>=1.6

clean_name utility function was first made available in version 1.6

Bump uglify-js from 3.16.3 to 3.17.0

Bumps [uglify-js](https://github.com/mishoo/UglifyJS) from 3.16.3 to 3.17.0.
- [Release notes](https://github.com/mishoo/UglifyJS/releases)
- [Commits](mishoo/UglifyJS@v3.16.3...v3.17.0)

---
updated-dependencies:
- dependency-name: uglify-js
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Fix typo

Create XHR listeners before opening the connection (#205)

https://stackoverflow.com/questions/14160308/xhr-upload-onprogress-doesnt-work

Add S3OptimizedUploadStorage (#128)